• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.873-875
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• 2009

Middle distillate was produced by the hydrocracking of F-T wax on the zeolite catalysts. Novel metal loaded zeolite catalysts had good performance for hydrocracking of F-T wax. 2 wt.% Platinum loaded H-Y zeolite catalyst showed the highest selectivity of middle distillate and conversion of F-T wax. H-Y zeolite had more strong acidity site and large pore than that of another zeolite catalyst. So, H-Y zeolilte catalyst showed the best activity for hydrocracking of F-T wax.

• 한국식품영양학회지
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• 제15권2호
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• pp.137-143
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• 2002

고형분 함량은 어린 동아 착즙액에서는 3.1%, 익은 동아 착즙액에서는 0.1%를 나타냈고, 주성분은 당으로 89.7%를 나타냈다. 펙틴 함량은 익은 동아즙은 4.l1mg/ml, 어린 동아즙은 4.43mg/ml이었다. 당 함량은 익은 동아 육질은 sucrose 0,1%, glucose 0.32%, fructose 0.35%, 미확인당 1이 0.06%, 2가 0.04%로 합계 0.87%를 나타냈다. 어린 동아 육질은 sucrose 0.33%, glucose 1.04%, fructose 1.12%, 미확인당 1이 0.18%, 2가 0.12%로 합계 2.79%를 나타냈다. pH는 익은 동아는 4.64, 육질은 4.94, 어린 동아의 속은 4.96, 육질은 5.40을 나타냈다. 유기산은 익은 동아 육질에는 citric acid 0.409, magic acid 0.084, succnic acid 0.048%, 속에는 citric acid 0.648, malic acid 0.127, succinic acid 0.057%, 어린 동아 육질에는 citric acid 0.028, malic acid 0.219, succinic acid 0.298%, 속에는 citric acid 0.039, malic acid 0.360, succinic acid 0.224% 들어 있다. Fumaric acid는 미미하다. 총량은 익은 동아 속이 0.833, 어린 동아속 0.624, 어린 동아 육질 0.546, 익은 동아 육질 0.541이었다. 여드름균(Propionibacterium acnes)에 대한 항균력은 대조군이 0($\Phi$, cm)인데 반해, 비열처리 동아즙은2.6, 열처리 동아즙은2.5, 1/5 농축한 것은 1.9, 1/10 농축한 것은 2.5, 동결건조한 것은 2.3을 나타냈다. 멜라닌 생성 억제력은 0.01%에서 대조군이 29$\mu$l/m1인 데 반해 열처리 동아즙은 15$\mu$l/ml 을 나타냈고, 비열처리 동아즙은 이보다 약간 높았다. 1/5 농축한 것은 24 $\mu$l/ml, 1/10 농축한 것은 23 $\mu$l/ml, 동결건조한 것은 19 $\mu$l/ml를 나타냈다. 이들 결과에 따라 동아즙을 30% 가하여 나리싱크림과 밀크로숀을 조제하였다.

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2008년도 제38차 학술발표대회
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• pp.95-97
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• 2008

In this study eco-friendly wax remover for printing table of flat screen was investigated. Seven organic solvents, diethylene glycol monomethyl ester, triethylene glycol monomethyl ester, triethylene glycol monobutyl ester, tripropylene glycol monomethyl ester, dimethyl sulfoxide(DMSO), trichloro ethylene(TCE), tolune, were used as resin wax remover. The resin wax solubility with solvents was investigated. DMSO was found to be the most suitable eco-friendly resin wax remover.

• Journal of Nutrition and Health
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• 제36권5호
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• pp.446-451
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• 2003

The purpose of this study was to investigate the effects of wax gourd on weight, triglyceride, leptin and fat cell size in rats fed a high-fat diet. Male Sprague Dawley rats were fed an experimental diet containing total dietary fat at 40% of calories with wax gourd 0%, 5%, 10% and 15% (w/w) for 4 weeks. Weight gain and triglyceride level fell significantly in the 15% wax gourd group compared to the control group. Epididymal fat pad, abdominal fat and perirenal fat tended to decrease in the 15% wax gourd group. Leptin and free fatty acid level were not significantly different among the groups. Fat cell size significantly decreased in the 10% and 15% wax gourd groups compared to the control group. Weight gain correlated positively with visceral fat masses and the levels of leptin and triglyceride. Fat cell size significantly correlated with visceral fat and leptin level. Therefore, the 15% wax gourd diet substantially reduced weight, triglyceride and fat cell size. (Korean J Nutrition 36(5): 446∼451, 2003)

• 펄프종이기술
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• 제40권2호
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• pp.23-28
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• 2008

As well as crop cultivation, they could not avoid automatizing and using more environmental friendly process in cultivation of fruit. And also, the consumer ask more safe fruit which is produced with more clean method. This is why the usage of aid materials for fruit cultivation like as fruiting bags are increasing. Practical utilization of wax emulsion treated water repelling fruiting bags are developed continuously and it's properties is compared properties of nomal fruiting bags. The water repelling process was developed with wax emulsion coating. After the experiment of wax emulsion preparation from paraffin and DEA and/or OA in Lab. scale, the wax emulsion was manufactured on pilot scale. The wax emulsion coated paper was prepared in mill scale coater. The water repellency and properties of emulsion coated fruiting bags were evaluated and compared with that of current fruiting bags.

• 대한치과기공학회지
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• 제24권1호
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• pp.107-126
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• 2002

The first function of occlusion is mastication. Therefore the functional restoration of occlusal surface is very important. The restoration of occlusal surface is three method as wax bite technique, F.G.P. technique, cone technique. Many dental technician is using compound method. I am using compound method of wax bite technique and cone technique. I have knew common point on each teeth during I have waxing up wax pattern. So I studied on the design waxup technique for mandible molar occlusion. The results of the study were as follows; 1. The dam wax up method can restore axial contour of teeth very easy and make short working time of wax pattern. 2. The height of dam must be same with cusp of adjacent teeth. 3. Automatically the contour of tooth is appeared if the contour of dam is relationship with cuspid line of adjacent teeth. 4. The height of contour of buccal, lingual surface is formed natural curve to add fluid wax by gravitation. 5. The development groove of mandible first premolar is appeared V form. 6. The development groove of mandible second premolar is appeared Y form. 7, The development groove of mandible first molar is appeared M form. 8. The development groove of mandible second molar is W form. 9. The embrasure is formed to carve around contact point area as round convex. It affects to axial form of tooth. 10. The buccal, lingual groove of molar is formed parallel with direction of teeth arrangement.

• 한국자동차공학회논문집
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• 제25권1호
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• pp.66-73
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• 2017

In this work, graphene platelets were introduced into wax in an automotive electronic controlled thermostat for the purpose of enhancing its thermal-conductive property and improving response performance. Graphene content ranging from 10 % to 20% was added into and mixed with the wax to investigate the effect of graphene amounts on the performance of an automotive electronic controlled thermostat in terms of response time, hysteresis and melting temperature. The experimental results revealed that graphene in wax contributed to a reduction in the response time and hysteresis of an automotive electronic controlled thermostat. As a consequence, important improvement in thermal sensitivity, full lift, melting temperature and hysteresis were obtained. The thermal response of wax with graphene content of 20 % was improved by 25 %, as compared to that of wax with Cu content of 20 %. Hysteresis of wax with graphene was reduced by $0.6^{\circ}C$ as compared to that of wax with Cu content. The melting temperature of wax is lowered and hysteresis is also improved with increased graphene content of wax in an electronic controlled thermostat. We hope that this study can help further the transition of nano-fluid technology from small-scale research laboratories to industrial application in the automotive sector.

• 공업화학
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• 제7권1호
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• pp.1-8
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• 1996

자동차 엔진용 thermostat에서 냉각수 온도제어를 위해 사용되는 wax의 제조 및 성분 분석을 실시하였다. 제조된 시료에 대해 lift 실험을 실시해 본 결과, 용제 추출법에 의해 제조된 시료가 자동차 엔진용 thermostat으로 사용 가능한 범위내에 있게 됨을 볼 수 있었다. 또한, 원유의 pitch를 용제 추출한 후 감압 증류 및 산처리를 하면 보다 정밀한 wax를 제조 할 수 있음을 알 수 있었다.

• 한국응용과학기술학회지
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• 제31권2호
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• pp.203-209
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• 2014

Candelilla wax-in-water nanoemulsions stabilized by Span 80/Tween 80 were prepared by the phase inversion composition (PIC) method. Stable nanoemulsions with droplet diameters below 50 nm could be formed when the hydrophilic-lipophilic balance (HLB) values were between 13.5 and 14.5, surfactant concentration was 5.0 wt%, and the surfactant-wax ratio was 1:1. Increased emulsification temperature and cooling rate were found to improve the emulsion properties. Process of PIC (adding aqueous phase to the wax phase) produced smaller droplet size nanoemulsion compared to the process of adding wax phase to the aqueous phase. The stability of these nanoemulsions was assessed by following the change in droplet diameters with time of storage at room temperature (${\sim}25^{\circ}C$). The size remained constant during 2 months storage time.

• 대한치과기공학회지
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• 제44권1호
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• pp.24-30
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• 2022

This research introduces the manufacturing process of the metal-framework of one of the maxillary partial dentures, the "obturator", using milling wax-blocks, for patients with palate loss due to oral cancer. It explains the protocol of taking the patient's oral impression, preparation of a working cast, scanning, designing using a computer-aided design program, investing the milling wax-blocks, and completing the obturator. This method does not follow the traditional wax and agar process thereby reducing the errors arising during the manufacturing process and decreasing the time, material, and labor required. Moreover, the retention, stability, and compatibility of the metal framework were observed to be high in both the working cast and oral cavity.